Sodium chloride

Sodium chloride, also known by its chemical formula NaCl, is a common ionic compound made from sodium and chloride ions. It is the main ingredient in table salt, which we use to add flavor to our food and help keep it fresh.

This compound can be clear or slightly cloudy and breaks easily. It also has a special property that lets it absorb moisture from the air.

Besides our food, sodium chloride is very useful in many ways. It is used in factories for making other important chemicals. In cold weather, it helps melt ice on roads, making travel safer.

Uses

Salt has many important uses. We use salt to make other chemicals like chlorine and sodium hydroxide. These help make things such as paper, soap, and aluminum.

Salt also helps keep roads safe in winter. When it gets very cold, salt can be spread on roads to stop ice from forming. In cooking, salt makes food taste better and helps keep it fresh longer. It is also used in medicine, for example in special water solutions that doctors give to people who need extra fluids.

Chemistry

Sodium chloride, also called common salt, has a special pattern. Each tiny part is surrounded by parts of the opposite type, forming crystals.

When salt is mixed with water, it breaks apart into tiny parts that spread out and mix with the water. This changes how the water behaves, making it different from pure water.

Occurrence

Salt is found in the Earth's crust as a mineral called halite, which is also called rock salt. Small amounts of salt can also be found in the air as tiny sea salt particles. These particles help clouds form over the ocean.

Production

Salt is made today by removing water from seawater or from special water in brine wells and salt lakes. We can also get salt by mining it from underground. China makes the most salt in the world. Salt can also come out when we mine for potassium.